class MyThread extends Thread {
    @Override
    public void run() {
        while(true) {
            System.out.println("hello thread");
            //休眠一秒
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
public class TestMian_1 {
    public static void main(String[] args) {
        Thread t1 = new MyThread();
        t1.start();

        while (true) {
            System.out.println("hello main");
            //休眠一秒
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
